Personal defence device

ABSTRACT

The invention relates to a switching device adapted for use in instruments of personal defence to actuate two or more electrically or mechanically operated components of which at least one is electrically operated and at least one is mechanically operated. The device may be adapted for use in conjunction with the push button system of a torch, the push button system being operable both partially so as to actuate only the circuit for a bulb, and fully so as to actuate also a noise alarm device and mechanically actuate means capable of emitting a spray jet.

United States Patent [191 [111 3,794,791 Thomson 7 Feb. 26, 1974 154]PERSONAL DEFENCE DEVICE 3,703,714 11/1972 Qndrews 340 224 [76] Inventor:Peter Thomson 45ABlossom St 3,614,351 10/1971 0 cm 200/6l.86

York, England [22] Filed: June 29, 1972 [21] Appl. No.: 267,362

[30] Foreign Application Priority Data June 29, 1971 Great Britain30,426/71 [52] US. Cl ZOO/61.93, 200/61.86, 340/321 [51] Int. Cl. H0lh9/06 [58] Field of Search 340/220, 224, 321; 200/52 R,

200/60, 61.86, 61.93, DIG. 2

[ 56] 1 References Cited UNITED STATES PATENTS 3,142,833 7/1964 Bosley340/321 3,171,109 2/1965 Appel 340/321 3,046,366 7/1962 Zekendorf 200/52R Primary Examiner-Robert K. Schaefer Assistant ExaminerGerald P. TolinAttorney, Agent, or Firm-Allison C. Collard 57 ABSTRACT The inventionrelates to a switching device adapted for use in instruments of personaldefence to actuate two or more electrically or mechanically operatedcomponents of which at least one is electrically operated and at leastone is mechanically operated. The device may be adapted for use inconjunction with the push button system of a torch, the push buttonsystem being operable both partially so as to actuate only the circuitfor a bulb, and fully'so as to actuate also a noise alarm device andmechanically actuate means capable of emitting a spray jet. i

8 Claims, 20 Drawing Figures PATENTE FEB26 SHEET 1 BF 8 PATENTEU FEB 261914 sum 6 OF 8 7 8 B fi9 4 2 4 4 1:1- MAW @HNHHV- 1| a OIIIIIIIIIIIIINI lllllllllll II. 6 6 f PERSONAL DEFENCE DEVICE BACKGROUNDOF THE INVENTION This invention relates to a novel switching deviceadapted for use in actuating two or more electrically or mechanicallyoperated components, of which at least one is electrically operated andat least oneis mechanically operated.

The requirement is for a switching device of the above indicated kind,wherein the electrically operated components comprise of a bulb; and themechanically operated components include means capable of projecting aspray jet, e.g. a marker dyke spray, which may be with a malodoroussubstance, and a gas-operated whistle acting as a noise alarm device.

A second requirement is for a switching device adapted for use asindicated above, wherein the electrically operated components include anelectric buzzer acting as an alarm device; a radio transmitter; a bulb;any desired optional components of a separate electrical circuit; acontact for an aerial for the radio transmitter; and an optionalactuation system'for any desired number of switches for furtherelectrical circuits; and the mechanically operatedcomponents comprise anaerosol system capable of projecting a spray jet of a marking substancewhich may be malodorous.

British Pat. application No. 30,426/71 describes an instrument ofpersonal defence or a torch designed for self-defence, including atleast one power supply providing power for a bulb in a bulb holder of alensreflector unit system; at least one switch electrically actuatingthe bulb circuit; and at least one push-button system; operable by meansof an emergencyswitch, both partially so as to actuate only the bulbcirciut; and fully so as to actuate also a device creating a noise alarmand to mechanically actuate reversibly means capable of projecting aspray jet from the torch. It is an object of the present invention toprovide a switching device of the above-indicated kind adapted for usein conjunction with the push-button system of a torch of theabove-indicated kind.

In particular, the above-mentioned torch may further include a buttonserving to reset the switch actuating the device creating the noisealarm; in which case the emergency switch actuates the alarm switchirreversibly, whereby, when the emergency switch is released, the noisealarm continues to sound after the torch has been extinguished and theejection of spray jet has ceased. It is a further object of the presentinvention to provide a switching device adapted for use in a torch ofthe last-mentioned kind.

i More particularly, the instruments or torch described in British Pat.application No. 30,426/71 may include a radio transmitter, poweredeither in the circuit of the device creating a noise alarm or a separatecircuit from the device creating a noise alarm, being operated by afurther power supply electrically actuated by a separate switch. Theswitch actuating the radio transmitter is in turn actuated by theemergency switch. It is a further object of the present invention toprovide a switching further object of the present invention to provide aswitching device of the above-indicated kind adapted for use in such atorch.

In the above-mentioned torch, the device creating a noise alarm may beeither electrically or mechanically operable, and it is a further objectof the present invention to provide a switching device of theaboveindicated kind suitable for use in each such case.

It is a further object of the present invention to provide a switchingdevice capable of operating in a desired sequence at least oneelectrically actuated component and at least one mechanically actuatedcomponent and at least one other component.

SUMMARY OF THE INVENTION The invention will now be described withreference to the accompanying drawings, wherein:

FIG. 1 illustrates a switching device of the invention inside elevation.

FIG. 2 illustrates in plan view the device shown in FIG. 1.

FIG. 3 illustrates a front elevation of the device shown in FIG. 1.

FIG. 4 illustrates an L-shaped groove through which the device shown inFIG. 1 can slide.

FIG. 5 illustrates the device shown in FIGS. 1 to 4 incorporating alight system and including a power supply slidable manually so as toactuate electrically a bulb.

FIG. 6 illustrates diagrammatically the base of a switching device ofthe invention viewed from the above with the device in the (OFF)position, adapted I for use in a torch comprising means capable ofprojecting a spray jet from the torch, and a radio transmitter.

FIG. 7 illustrates diagrammatically the contact positions of a device ofthe invention in the (OFF) position.

FIG. 8 illustrates diagrammatically the base of the switching deviceshown in FIG. 6, with the device operating a bulb of the torch.

FIG. 9 illustrates diagrammatically the contact positions of a device ofthe invention operating a bulb of a torch incoporating the device.

FIG. 10 illustrates diagrammatically the base of a switching device asshown in FIG. 6 adapted for use in a torch including an electricallyoperable device creating a noise alarm,.with the switching deviceoperating the device creating a noise alarm, the radio transmitter, acontact for an aerial for the radio transmitter and a bulb for thetorch.

FIG. 1 1 illustrates diagrammatically the contact positions of a deviceof the invention operating a device creating a noise alarm, a radiotransmitter, a contact device of the invention adapted to actuateelectrically a device creating a noise alarm and a radio transmitterforoperation from an emergency switch of a torch incorporating theswitching device.

FIG. 14 illustrates a circuit board layout suitable for a printedcircuit board on which is laid out the circuit illustrated in FIG. 13,in conjunction with a conventional bulb circuit in a torch incorporatingthe switching device.

FIG. illustrates in an elevation and partly in crossa section a torchincluding a bulb, a whistle, and a dye spray jet actuated by a switchingdevice as shown in FIGS. 1 to 4.

FIG. 16 illustrates in elevation and partly in crosssection a torchincluding a bulb, a buzzer, an aerosol, and a radio transmitter actuatedby a switching. device as shown in FIGS. 6 to 11.

FIG. 17 illustrates in cross-section view a torch similar to that shownin FIG. 16.

FIG. 18 illustrates in plan view and partly in crosssection the torchshown in FIG. 17.

FIG. 19 illustrates inside view the torch shown in FIG. 17.

FIG. illustrates the torch shown. in FIG. 17 in a section al view takenalong the line A-A in FIG. 18.

In the device illustrated in FIGS. 1 to 4, a switch part. 57 (FIG. 4) isa close-sliding fit on side part 58 of the aerosol button; and anL-shaped groove 59in each side of the actuator fits as a close fit overa small square protruding portion on the inside surface of the case.Until the switch 35 (FIG. 1) is pushed fully forward, so as to operate abulb 1, it cannot move vertically with the torch in an upright position,so that this arrangement provides safe controlled operation of furthercompo nents.

In addition the base of the switch is stepped, so that it rests on thetop surface of a spray can button 60, with the torch held in an uprightposition until pushed forward, as an additional safe guard againstaccidental projection of the spray jet.

When the device is in the pushed-forward position, after the bulb 1 hasbeen operated, the lower surface of the switch 35, with the torch heldin an upright posi tion, is in contact with or close to the top surface61 of a whistle 2 actingas an alarm device, and can be depressedvertically in this position so as to compress vertically the whistle 2.This movement cannot be effected until after the bulb 1 has beenoperated.

The device can fit over the spray can button 60 and is so shaped inrelation thereto, that it can slide forwards horizontally with the torchheld in an upright po-' sition, a sufficient distance to operate thebulb l without depressurizing a spray can 62 for which the part I is thebutton. Provision is made through the centre of the device for thepassage of an aerosol extension tube 63 from the button 60 to the exitpoint 64 at the front of the case. The spray can 62 is operated in thesame manner as, and simultaneously with the whistIeZ, by verticaldepression of the device with the torch held in an upright positionafter the bulb 1 has been operated.

In FIG. 2 there is shown a bulb holder 4 for the bulb 1.

tion, so that the spray jet is projected via the cxtensio tube 63 overthe top of the whistle 2. Y

In FIG. 5, the arrangement of the bulb system is shown in which alens-ended bulb I is used. I

7 One terminal of the battery 5 is in permanent contact with a metalclip 7, which holds the bulb I in position,

its lens 6 protruding through ahole in the container of 7 the torch inwhich the device is to be contained. On actuation of the light switch,the battery 5 is moved forward so that a second contact 7 contacts theend contact 3 (FIGS. 2 and 5) of the bulb 1 so completing the circuit.In this instance noother circuitry is re quired. In the base of aswitching device of the invention, illustrated in FIG. 6, the completeconfiguration is shown.

In normal use the device may be held in either hand, when in an uprightposition having its long axis vertical and the edge, from the top ofwhich the bulb 1,(FIGS.

1, 5 and 15) and tube 63 (FIG. 1) protrude, facing forwards.

To operate the bulb 1 the user pushes the device fully forward using thethumb. The device may now be used for the sole purpose of maintainingoperation of the bulb l but is also in the activated position forimmedi:

ate emergency use to operate furthercomponents.

first positions rather than maintained in its second position.

After emergency use any drops of spray substance should be shaken orwiped from. a spray tube end and preferably the whole torch placed in awaterproof container.

In FIGS. 6, 8, and 10 there are shown an aerosol button8 and an aerial.9 in the positions adopted respectively when the device is in the OFFposition, in' the position such as to operate only the bulb 1 (FIGS; 1,5 and 15) and in FIG. 10, when the device is in the position such astooperate only the bulb 1 (FIGS. 1, Sand 15), a buzzer 2 (FIGS. 16 and17),a radio, transmitter 47 and a. contact for an aerial 45 (FIGS. 16and 20) for the radio transmitter 47 (FIGS; 16 and 17) and an aerosolspray means. In FIGS. 6, 8, and 10 the part 10 represents electricalswitches.

In FIGS. 7, 9 and 11 there are shown contact positions of a device whenin the respective positions corresponding to FIGS. 6, 8, and 10. InFIGS. 7, 9 and 11 the part 11 represents the base of the device, thepart 12 an electrically insulating portion of the device, and the parts13 metal electrical contact portions of the device electricallyinsulated from each other. The parts l4, l5, 16 represent respectivepairs of electrical contacts for the bulb 1 (FIGS. 1, 5 and 15) thebuzzer 2 (FIGS. 16 and 17) and the radio transmitter 47.

In FIG. 12 there is shown a circuit diagram for the radio transmitter 47(FIGS. 16 and 17) and associated aerial 45 (FIGS. 16 and 20) suitablefor actuation by a switching device of the invention. The transmitter 47(FIGS. 16 and 17) generates a continuous wave using a quartz crystaloscillator 19 (FIG. 12). It gives a power output of from approximately100 to 400 mW using a 9-V battery 18 as a power supply, dependent on thesize of the battery 18. The transmitter 47 (FIGS. 16 and 17) is usedwith the telescopic aerial 45 (FIGS. 16 and 20) extended automatically.The positive terminal 65 (FIG. 12) of the battery 18 is held at earthpotential and a suppression capacitor in applied to the buzzer 2 (FIGS.16 and 17) by connecting a capacitor 67 (FIG. 13) across the terminals66 of the buzzer 20 (FIGS. 16 and 17), to prevent interference with thesignal generated by the radio transmitter 47. Such earthing is effectedby connection of the positive 65 (FIG. 12) to the operator of the torch.The coil 17 is matched to the impedance of the aerial 45 (FIGS. 16 and20).

In FIG. 13 there is shown a circuit diagram for a device of theinvention including the circuits employed for the buzzer 20 and theradio transmitter 22, which circuits are switched simultaneously, butare quite separate apart-from suchparallel connection. The circuit forthe bulb 1 is of a convensional nature incorporating two l.5V cells. Asmentioned above the circuit for the buzzer20 includesa capacitor 67connected across the buzzer 20 at'terminals 66. The circuit for theradio transmitter 22 incorporates a power supply 68 used with thepositive terminal 69 thereof kept at earthpotential by being connecteddirectly to the operator of the torch via a metal plate 44 (FIGS. 16 and17) in the casing of the torch.

The circuit for the radio transmitter 22 (FIG. 13) has three terminals;the earthed positive, and the negative terminals 27 (FIGS. 13 and 14)and a terminal connection 28 (FIG. 13) for the contact for the aerial23. The respective circuits for the bulb 1 (FIGS. 1, 5 and the buzzer(FIG. 16) and the radio transmitter 22 are laid out on a printed circuitboard 48 (FIG. 16), to which are attached also the aerial 45, the plate44, the capacitor 67 (FIG. 13) and a battery clip 56 (FIG. 20) and theconnectors 7 (FIG. 5).

In FIG. 14 the circuit board layout shown illustrates the precisespatial arrangement of switches 24, and 72 respectively for the radiotransmitter 47 (FIGS. 16 and 17), the buzzer 2 and the bulb 1 (FIGS. 1,5 and I5); battery terminals 26, 29 and 30 (FIG. 14); and a battery clip73; the terminals 27, 28 and 66; and an a erial fixing 34.

In FIG. 15, a torch is shown in the form of a cylinder,

containing a self-reflecting bulb 1 having direct electriond ON positionbeingused most frequently, thus acting as an emergency switch, and ismounted along an edge of the body of the torch near to the top face. The

button 60 operates a valve 38 via a stem 37 of the spray can 62containing a harmless substance 32, when an emergency switch isdepressed, thus projecting a spray jet along the extension tube 63. Alocation pip 41) is situated in whistle 2 so that the valve (not shown)of the whistle 2 can be operated repeatedly. The whistle 2 is suppliedfor its operation with gas from an aerosol supply 41.

A second such torch shown in elevation in FIG. 16 is similar-to thatillustrated in FIG. 15. It incorporates further the feature of thetransmitter 47 housed adjacent to the spray can 62 and actuated bydepression of the emergency switch 35. Depression of the switch 35 alsooperates the aerosol means for projecting a spray jet, by depression ofthe button 60 until it is released. Simultaneously, on the firstdepression, a buzzer circuit for a buzzer 2 and a transmitter 47 iscompleted, the desired noise alarm is created and the transmitter 47 isactivated. For reasons of space a buzzer 2 creating the alarm issituated below the spray can 62.

The radio transmitter 47 is powered from a power supply 46 on a separatecircuit from that of the bulb 1 (FIGS. 1, 5 and 15) and buzzer 2 (FIGS.16 and 17), which are powered from a power supply 5 (FIGS. 16 and 20).The bulb 1 (FIGS. 1, 5 and 15) is provided with a reflector unit 43(FIGS. 16 and 17. The printed circuit board 48 is shown in FIG. 16, thespray can 62 being located securely away from the printed circuit board48; the metal plate 44 is inserted in the case 51 of the torch, on thevertical face 39 thereof with the torch held in an upright position, toprovide the desired earth connection via the user of the torch. A hole(not shown) is provided at one side of the base 39 of the torch topermit the automatic aerial 45 to extend and a further hole (not shown)on the centre line 42 of the base 39 to provide a fixing point for ahand strap (not shown). A vertical grille (not shown) on one side of thecase 51 assists in the emission of the noise from the buzzer 2.

The bulb 1 (FIGS. 1, 5 and 15) and its associated lens-reflector unitsystem incorporating the reflector unit 43 FIGS. 16 and 17), fit intothe fowardly projecting portion 36 of the upper part 69 of the case 51and on the front surface 70 of the portion 36 are provided, a hole 71 ofrelatively large diameter which hold the lens 6 (FIG. 5) of thelens-reflector unit system and a relatively small hole 64 (FIGS. 1 and16) locating the forward end 74 (FIG. 16) constituting the orifice ofthe extension tube 63.

The switch 35 fits in the rear edge 75 of the case 39 at its top comer76. A cutaway portion 77 is provided for this purpose and the switch 35slides into the allotted position. The switch 35 is prevented fromfalling out of the case 51 by'a lip (not shown) on its base78 whichlocates against the edge portion 77 of the case 51 when the switchingdevice is in the OFF position, as described above. Thus the switch 35cannot be drawn back outside the case 51.

In the torch shown in FIG. 17, the part 49 represents a grommet, and thepart 5 (FIGS. 17 and 20) represents a cover for the reflector 43 in FIG.18 is shown a click stop 53 for the switch 35 in FIG. 20 are shown aclip 56 for the batteries 5 and two separate power supplies 80respectively for the bulb 1(FIGS. l, 5 and 15) and the buzzer 2 (FIGS-l6and 17). y

In normal use, to operate the bulb 1 (FIGS. 1, 5 and 15), the operatorof the torch pushes forward the switch 35 (FIGS. 1, l5 and 16) manuallyuntil resistance is felt as the switch 35 comes onto a stop.

For emergency use the torch must be maintained in the vertical position.Whether or not the bulb 1 (FIGS. 1 and 15) is already operated, theradio transmitter 47 (FIGS. 16 and 17), the aerial 45 (FIG. 16) andbuzzer 2 are brought into operation by pushing the switch 35 to the fullextent of its travel. Then the means for projecting a spray jet can beoperated, as required, by pressing down the button 60 which will now beuncovered and unlocked.

After emergency use, the aerial 45 is fed back into the case 51 (thetorch still being held in a vertical position) and the switch 35 ispulled back to the OFF or first ON position as required. Any drops ofspray that may have accumulated at the exit 64 of the spray tube 63should be shaken or wiped away to prevent marking of the hands orclothing of the operator of the torch.

On actuation of the switch 35 the aerial 45 thus extends from the torchin a manner which causes a minimum of interference with the handling ofthe torch. The outer tube (not shown) of the telescope of the aerial 45is fixed in the case 51 and a centre shaft of the aerial 45 is heldready for use and free of actuation of the switch 35.

For reliability of operation the spray can 62 is used in a near-verticalposition with the torch in an upright position. For this reason themajor axis of the case 51 is simultaneously in a parallel direction,whereby the spray jet can be projected substantially horizontally. Themajor axis of the buzzer is substantially horizontal when the torch isin an upright position.

A small gap is left between the printed circuit board 48 and the case51. The aerial 45 runs the length of the case 51. The buzzer 2 isnormally placed against the left side of the case 51, so that the torchis adapted for use by a right-handed operator and his hand does notmuffle the noise alarm and therefore the printed circuit board 48 isaccordingly placed against the right side of the case 51. Thearrangement also allows for the projected spray jet to tend to fall intothe light beam from the bulb 1 (FIGS. 1, 5 and whereby the light beammay be used as a sighting line for direction of the spray jet.

With the switch 35 (FIGS. 1 and 15) in the OFF position or the first ONposition, there is no possibility of accidental projection. It is notnecessary that the second ON position of the switch 35 projects thespray jet, but only that the jet is freed on this movement and a thirdON position at which the projection of the spray jet becomes actuatedmechanically is a preferred feature. No undue force is required tooperate any of the above-mentioned components of the defence instrumentor torch and the manual movement of the operator of the torch is along alinear path.

An aerosol lock (not shown) is preferably included taking the form of ashaped hole in the base plate (not shown) of the switch 35. With theswitch 35 in the OFF position or the first ON position, the width of thehole immediately under the button 60 is small enough to prevent thebutton 60 from moving down to depressurise the spray can 63. A furtherforward movement of the switch 35 causes the wider part of thelastmentioned hole to align with the button 60, allowing the latter tobe depressed manually if required.

The aerial 45 is freed in a similar manner also using a hole (not shown)in the base plate of the switch 35. The centre (thinnest) segment of theaerial 45 has an enlarged portion at its upper end 79 which,'with theswitch 35 in the OFF position, is held in a slot (not shown). Forwardmovement of the switch 35 to its second ON position causes a hole (notshown) of diameter larger than the slot width, to align with the end 79of the aerial 45 which said end can then fall through the last-mentionedhole, causing the aerial 45 to be extended from the base 39 of the case51.

The electrical circuits are activated by metal connectors attached toone side of the base of the switch 35.

These connectors slide on the back surface of the printed circuit board48 and as the switch 35 is pushed forward they close the appropriatecircuits.

In FIG. 20 are shown a clip 56 forthe batteries 80, and two separatepower supplies respectively for the bulb 1 (FIGS. 1, 5, and 15) and thebuzzer 2 (FIGS. 16

and 17).

I claim; r l. A personal defence device comprising: a hand-held casing;a plurality of operable components comprising: means for producing anoise alarm located within the casing; and an aerosol spray can locatedwithin the casing to project a spray of a fluid from the device; and anoperating button carried by the casing and manually shiftablerelative'to the casing to and from a first position wherein neither ofsaid components are operated; and a second position wherein both ofsaidcomponents are operated by the operating button. 2. A deviceaccording to claim 1 wherein said aerosol spray can includes a spraybutton to actuate the spray when depressed, ,said means for producing anoise alarm comprises an aerosol operated whistle actuated by depressionof the whistle towards aerosol can, and wherein said spray button andwhistle are depressed by virtue of movement of said operating buttonfrom said first to said second position. I

3. A personal defence device comprising: a hand-held casing; 7 aplurality of operable components, including; an electric light bulbcarried by the casing to project a light beam from the device; anaerosol spray can located within the casing to project a spray of afluid from the device, and means for producing a noise alarm locatedwithin the casing; a source of electrical power located within the eass;an electric circuit including switch means within the casing to energizesaid light bulb from said source when said switch means is'closed. aspray button attached to said aerosol spray can to actuate said spray bydepression of said button; and

a multiposition operating button carried by the easing and manuallyshiftable relative to the quentially from a first position wherein noneof said components are operated, to a secondposition in which saidswitch means is closed by the operating button to energize said electriclight bulb, to a third position in which said switch means remainsclosed, said spray button is depressed and said noise alarm is operatedby the operating button.

4. A device according to claim 1 wherein said'means for producing anoise alarm comprises an aerosol operated whistle. I

5. A device according to claim I wherein the direction of the movementof said operatingbutton from the second to third position issubstantially at right angles to the direction of its movement from thefirst to second position.

6. A device according to claim 3 wherein said means for producing anoise alarm comprises. an electrically operated buzzer energized fromsaid source of electricasing secal power by an electric circuitincluding a second switch means and said second switch means is closedby closed by the operating button in said third position.

8. A device according to claim 7 wherein said radio I transmitter has atelescopic aerial normally entirely located in the casing but releasableto extend out of the casing, and said aerial is released only by theshifting of said operating button into the third position.

1. A personal defence device comprising: a hand-held casing; a pluralityof operable components comprising: means for producing a noise alarmlocated within the casing; and an aerosol spray can located within thecasing to project a spray of a fluid from the device; and an operatingbutton carried by the casing and manually shiftable relative to thecasing to and from a first position wherein neither of said componentsare operated; and a second position wherein both of said components areoperated by the operating button.
 2. A device according to claim 1wherein said aerosol spray can includes a spray button to actuate thespray when depressed, said means for producing a noise alarm comprisesan aerosol operated whistle actuated by depression of the whistletowards aerosol can, and wherein said spray button and whistle aredepressed by virtue of movement of said operating button from said firstto said second position.
 3. A personal defence device comprising: ahand-held casing; a plurality of operable components including; anelectric light bulb carried by the casing to project a light beam fromthe device; an aerosol spray can located within the casing to project aspray of a fluid from the device, and means for producing a noise alarmlocated within the casing; a source of electrical power located withinthe casing; an electric circuit including switch means within the casingto energize said light bulb from said source when said switch means isclosed. a spray button attached to said aerosol spray can to actuatesaid spray by depression of said button; and a multiposition operatingbutton carried by the casing and manually shiftable relative to thecasing sequentially from a first position wherein none of saidcomponents are operated, to a second position in which said switch meansis closed by the operating button to energize said electric light bulb,to a third position in which said switch means remains closed, saidspray button is depressed and said noise alarm is operated by theoperating button.
 4. A device according to claim 1 wherein said meansfor producing a noise alarm comprises an aerosol operated whistle.
 5. Adevice according to claim 1 wherein the direction of the movement ofsaid operating button from the second to third position is substantiallyat right angles to the direction of its movement from the first tosecond position.
 6. A device according to claim 3 wherein said means forproducing a noise alarm comprises an electrically operated buzzerenergized from saId source of electrical power by an electric circuitincluding a second switch means and said second switch means is closedby the operating button in said third position.
 7. A device according toclaim 3 wherein said operable components further include a radiotransmitter energized from a second source of electrical power locatedwithin the casing by an electric circuit including third switch meansand said third switch means is closed by the operating button in saidthird position.
 8. A device according to claim 7 wherein said radiotransmitter has a telescopic aerial normally entirely located in thecasing but releasable to extend out of the casing, and said aerial isreleased only by the shifting of said operating button into the thirdposition.